Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
030049goodexcellent101excellent
020038goodexcellent101excellent
010039goodexcellent121excellent
000055goodexcellent131excellent
230063lightly pollutedexcellent131excellent
220056goodexcellent111excellent
210059goodexcellent101excellent
200050goodexcellent111excellent
190055goodexcellent131excellent
180066lightly pollutedexcellent121excellent
170063lightly pollutedexcellent131excellent
160071lightly pollutedexcellent141excellent
150051goodexcellent121excellent
140047goodexcellent101excellent
130045goodexcellent91excellent
120039goodexcellent71excellent
110028goodexcellent71excellent
100034goodexcellent61excellent
090028goodexcellent41excellent
080032goodexcellent31excellent
070025goodexcellent31excellent
060023goodexcellent31excellent
050024goodexcellent31excellent
040028goodexcellent31excellent